A combined model for initiation and propagation of damage under fatigue loading for cohesive interface elements

被引：79
作者：
May, Michael [1 ]
Hallett, Stephen R. [1 ]
机构：
[1] Univ Bristol, Dept Aerosp Engn, Bristol BS8 1TR, Avon, England
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2010年 / 41卷 / 12期
关键词：
Delamination; Fatigue; Computational modelling; Cohesive elements; STRESS INTENSITY FACTORS; LAP BONDED JOINTS; COMPOSITE-MATERIALS; NUMERICAL-SIMULATION; DELAMINATION;
D O I：
10.1016/j.compositesa.2010.08.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A model for the simulation of damage initiation and subsequent propagation under cyclic loading is proposed The basis for the formulation is a cohesive law that combines phenomenological SN-curves for damage initiation with a fracture and damage mechanics approach for crack propagation The evolution of the damage variable is expressed as a function of fatigue cycles The model is independently calibrated for mode I and mode II loading using SN-curves and Paris-law coefficients obtained from simple coupon tests The model was applied to three initiation-driven cases Bending of 90 degrees laminates the Short Beam Shear test and the Double Notched Shear test The predictions for the first two cases showed an excellent correlation with experimental data Some modifications to the model were required when applying it to the Double Notched Shear test (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：1787 / 1796
页数：10
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